Chain-wheel.



Patented Apr. 29, |902.

No. 698,99l.

F. L. MORSE.

CHAIN WHEEL.

(Application led Apr. 13` 1901,) (No Model.)

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UNITED STATES PATENT OFFICE.

FRANK L. MORSE, OF TRUMANSBURG, NEW YORK, ASSIGNOR TO MORSE --CHAIN COMPANY, OF TRUMANSBURG, NEW YORK.

SPECIFICATION forming part of Letters Patent No. 698,991, dated April 29, 1902.

Application filed April 13 1901. Serial No. 455,697. (No model.)

.T0 a/ZZ whom, it may concern:

Be it known that I, FRANK'L. MORSE, a citizen of the United States, anda resident` of Trumansburg, in the county of Tompkins and State of New York, have invented certain new and useful Improvements nChain-Wheels, of which the following isa specification.

This invention relates to an improvement in chain-wheels, and particularly to that class of chain-wheels commonly termed sprocketwheels.

The object of the invention is to provide a wheel of this class such as maybe economically made and such as shall be perfectly safe in operation.

With these objects in view the invention consists in the formation and construction of chain-wheels, substantially as hereinafter described and claimed.

In the accompanying drawings, which form Aa part of this specification, Figure 1 illustrates in side View, and Fig. 2 in edge View, partially sectionized, a sprocket-wheel embodying the invention. Figs. 3 and 4 are like views, respectively, of a'sp'rocket-wheel embodying the invention in a slightly-dierent form.

The chain-wheelsto which this invention is especially applicable are those wherein the links of the chain arch over the teeth of the wheeler are provided with projections which extend into the spaces between the teeth. In

wheels for this sort of chain-gearing it is desirable to havesome means for preventing lateral displacement of the chains on the" wheels. Such means are best provided by projections or flanges at the ends of the sprocket-teeth. These Iianges or projections may be provided in 1various ways. In the wheel shown in Figs. land 2 theyl are made as follows: Into the periphery of the Wheel is first cut a groove, as indicated at 5, Fig. 2, whereby a ilange is left at each side of the wheel. The wheel is then milled transversely to form the teeth 6, the transverse cuts for this purposeextending below the bottom of the groove 5. l In this way the ange about the sides of the wheel at the ends'of the teeth is formed into projections,` suchas indicated at 7. These projections are preferably outwardly beveled from their bottom toward their tops, as shown, thereby more easily and readily guiding the chain into the groove 5 and into proper engagement with the sprocket-teeth. While this is the most economical mode of formationfor a sprocketwheel embodying this invention, the said invention Inay be embodied in wheels otherwise constructed-for instance, as in the wheel shown in Figs. 3 and 4. Therein the body portion 8 of the wheel is transversely milled on its periphery or otherwise cut toform the main portion of the teeth, as indicated at 9. The body portion ofthe wheel may be reduced on its sides, near its periphery, for the reception of the rings 10, the outer peripheries of which 'rings are iiu'sh with the tops of the teeth 9. These rings are bolted or otherwise secured to the body-of the Wheel 8, as by bolts 11. Said rings 10 are milled transversely in a manner such as to provide teeth or projections of greater width than the teeth 9 and are outwardly beveled on their inner surfaces where they abut against the ends of said teeth 9, the outwardly-beveled portions of said teeth projecting beyond the width of the teeth 9, as indicated at 12. The anges thus formed at the ends of the teeth serve the same purpose as the Iianges or projections 7 in theform of Wheel shown in Figs. land 2.

Other changes in the construction and formation of sprocket-wheels embodying this invention maybe made without departing from the spirit thereof.

I claim as my invention- 1. A chain-Wheelhavin g grooves extending transversely across the entire periphery of the wheel thereby leaving sprocket-teethextending from side to-side ofthe wheel, said teeth havin g guiding-danges aty their ends whereby the chain maybe retained on the teeth.

2. A chain-wheel having a groove about its periphery leaving projecting ridges at the sides thereof and transverse channels extend-l ing from side to side of the wheel and sunk below the bottom of said groove thereby leaving teeth with outwardly-extending projections at their ends substantially. as set forth.

Signed at Trumansburg, in the county of Tompkins and State of New York, this 9th day of April, A. D. 1901.

" FRANK L. MORSE.

Witnesses:

L. BANTA, JULIA L. SEELYE. 

